Enhanced ionic conductivity of yttria-stabilized ZrO2 with natural CuFe-oxide mineral heterogeneous composite for low temperature solid oxide fuel cells

被引：42
作者：
Xu, Rong [1 ]
Wu, Yan [1 ]
Wang, Xunying [2 ]
Zhang, Jing [1 ]
Yang, Xiang [1 ]
Zhu, Bin [2 ,3 ]
机构：
[1] China Univ Geosci Wuhan, Fac Mat Sci & Chem, Wuhan, Hubei, Peoples R China
[2] Hubei Univ, Fac Phys & Elect Sci, Hubei Collaborat Innovat Ctr Adv Organ Mat, Wuhan, Hubei, Peoples R China
[3] Royal Inst Technol, Dept Energy Technol, Stockholm, Sweden
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2017年 / 42卷 / 27期
基金：
中国国家自然科学基金;
关键词：
CuFe-oxide mineral; Yttria-stabilized ZrO2; Heterogeneous composite electrolyte; Low temperature solid oxide fuel cells; ELECTRICAL-PROPERTIES; OXYGEN REDUCTION; ELECTROLYTE; PERFORMANCE; HEMATITE; CERIA; FABRICATION; CONDUCTORS; LAYER;
D O I：
10.1016/j.ijhydene.2017.05.218
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We report for the first time that the commercial yttrium stabilized zirconia (YSZ) nano composite with a natural CuFe-oxide mineral (CF) exhibits a greatly enhanced ionic conductivity in the low temperature range (500-600 degrees C), e.g. 0.48 S/cm at 550 degrees C. The CF YSZ composite was prepared via a nanocomposite approach. Fuel cells were fabricated by using a CF YSZ electrolyte layer between the symmetric electrodes of the Ni0.8Co0.2Al0.5Li (NCAL) coated Ni foam. The maximum power output of 562 mW/cm(2) has been achieved at 550 degrees C. Even the CF alone to replace the electrolyte the device reached the maximum power of 281 mW/cm(2) at the same temperature. Different ion-conduction mechanisms for YSZ and CF YSZ are proposed. This work provides a new approach to develop natural mineral composites for advanced low temperature solid oxide fuel cells with a great marketability. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：17495 / 17503
页数：9
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